AnandTech's iOS 9 review

AnandTech's conclusion:It's probably not surprising to hear that iOS 9 is better than iOS 8. On the iPhone I think iOS 9 brings along many smaller improvements throughout the OS, along with new APIs that developers can implement to improve the user experience. There are definitely some big changes such as the addition of Apple News and Transit in Apple Maps, but these are again just strengthening the core services of iOS rather than adding incredible new abilities and features. iOS 9 is definitely a huge release for the iPad though, and because I've been limited to Apple's own applications I've only been able to scratch the surface of what capabilities the new multitasking features can enable. I think the iPad definitely deserved a major release that focused on it though, and it's clear that Apple has had many of these changes in the pipeline for quite some time now.In the end, iOS 9 offers something new and great for all iOS users, and particularly those who use an iPad. With Apple expanding their portfolio of iOS devices and implementing new features like 3D Touch there are a number of directions they could go in with future releases of iOS, and only time will tell which direction they choose.Seems like a great release all around, but I don't think there's anything in there that will make people jump ship - in that sense, it's a lot like Android M.